Improvement in bench-planes



' J. H. LEWIS.

Bench-Plane.

No. 211,516. Patented Jan. 21,1879.

fnvanzor UNITED STATES PATENT OFFICE.

JAMES H. LEWIS, OF DETROIT, MICHIGAN, ASSIGNOR OF ONE-HALF HIS RIGHT TOGEORGE H. STELLWAGEN, OF SAME PLACE.

IMPROVEMENT IN BENCH-PLANES.

Specification forming part of Letters Patent No. 211,516, dated January21, 1879 application filed September 18, 1878.

To all whom it may concern:

Be it known that I, JAMES H. LEWIS, of Detroit, in the county of Wayneand State of Michigan, have invented an Improvement in Bench-Tools,ofwhich the following is a specification:

The nature of my invention relates to certain new and usefulimprovements in hand or bench toolsof the plane class, and isparticularly designed for use in sticking a bead or molding upon circleor irregular work.

The invention consists in a double faced plane-stock, in which areremovably secured proper heads, carrying the cutting-blades, all as morefully hereinafter set forth.

Figure l is a perspective view of my improved device ready for use. Fig.2 is a perspective view of one of the cutter-heads removed. Fig. 3 is abottom plan of the same, and Fig. 4 is a longitudinal section on theline mm in Fig. 2.

In the accompanying drawing, which forms a part of this specification, Arepresent a metallic stock with the plane-faces (I, in .which are outproper openings to receive the heads and cutters, hereinafter described.B representcutter-heads provided with throats. Upon these headsB areremovably'secured the blades 0, which are held in position by means ofthe plates D and screws 1), or in any other suitable manner. Adj ustablysecured to one side of the heads-B are spur-blades E, which cut thestraight side of the channel in a beading.

Extending downward from the faces of the heads B are two ribs, F G, thelatter of which is oval in longitudinal section, while the inner face ofthe former has a contour corresponding to the cutting-edge of the blade0, which passes through it, and which produces the molding desired. Thefaces of these ribs are formed in the segment of a given circle.

When the heads are placed in the stock, they are held in position bybuttons H, or other suitable means.

In practice, when it is desired to cut a bead or molding upon the inneredge of an arch or circle, the device is placed to its work, so as tocut with the grain, the rib. G following the line of the edge of theboard, while the blade 0 and spur-blade E cut the inner half of the beadand channel. To cut the remaining half ofthe bead, the device isreversed or turned over, andthe otherheadused, as the nature of the workmay require, so that the cut will always he with the grain.

While the ribs F G are formed in the segment of a given circle, thedevice is by no means limited to work in such circle, but can be used inwork the radii of which is greater or upon straight work.

The heads carrying the cutting-blades may be constructed to outdifferent sizes, and be interchangable, using but one stock for a set ofheads.

What I claim as my invention is 1. The double-faced triangular stock A,hav; ing the cutter-heads B on opposite sides, and the cutters O E,adjustably secured in such heads, substantially as and for the purposesset forth.

2. A bench-tool for cutting circular or iiregular moldings, consistingof a double-faced triangular stock, A, cutter-heads B on oppo-

